user
Write an introduction to the topic of climate change.


assistant
Climate change is the long-term alteration of temperature, humidity and other elements of the climate system due to human activity. It has significant impacts on human health. Rising temperatures are linked to more severe and frequent natural disasters, spread of infectious diseases, extreme weather events, water and food security threats, and loss of biodiversity, among other impacts. Climate change is an urgent issue for the world, as its effects are already being felt and will only worsen over time.